Independent project

Support CindrenCalc

CindrenCalc is developed as an independent project. If the tools are useful to you, you can voluntarily support the service's continued development and maintenance.

Voluntary support

Support is entirely voluntary and does not affect access to calculators, tools, or any other CindrenCalc features. It is not a purchase of a premium version or a subscription.

Support via PayPal

Choosing support takes you to PayPal, which handles the payment independently. CindrenCalc does not collect or process payment data. PayPal's own terms and privacy rules apply there.

External payment service: PayPal

Support via PayPal